E q u a t i o n s w i t h v a r i a b l e s o n b o t h s i d e s :
For equations with variables on both sides we can only use the balancing method
•
We have to perform operations to move -
All the variables to one side of the equation
○
All the numbers to the other side of the equation
○
•
Ex.
E q u a t i o n s w i t h b r a c k e t s :
For equations with brackets (grouping symbols), expand the expression then solve as
usual
Eg.
2(3x-4)=20
□
6x - 8 = 20
□
6x = 28
□
X = 4.6666..... (4.67 - 2d.p.)
□
○
•
S i m p l e q u a d r a t i c e q u a t i o n s :
An equation involving a pronumeral squared, such as
𝑥
= 25,
is called a quadratic
equation.
•
We are doing simple quadratic equations of the type x^2=c (where c is a number)
•
Ex.
Chapter 10: Equations & Algebra.
Tuesday, 12 October 2021
5:38 PM
